build(ci): Update actions/upload-artifact to v4 #14756

Job	Run time
Lint	2m 46s
Lint Rust Default Features	1m 34s
Test (macos-latest)	2m 32s
Test (windows-latest)	6m 17s
Setup build metadata	1s
Test All Features (ubuntu-latest)	3m 32s
Integration Tests	13m 8s
Test Python	1m 14s
Build Relay Binary (relay, x86_64-unknown-linux-gnu)	7m 47s
Build Docker Image (relay)	28s
Sentry-Relay Integration Tests	11m 32s
Publish Relay to DockerHub	0s
self-hosted-end-to-end	13m 13s
Upload build artifacts to gocd	0s
Publish Relay to GCR	0s
	1h 4m 4s

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